I have input the same recipe in to Beersmith and Beer tools. I get differant output. I am very conserned about this. How do I post the recipe and have someone look at it. The Beertools one uses way more sugar then the other.

Asides of what has been suggested already, have you checked the extract potiential of all the grains used in the beerSmith database?

I use both of these programs as well, and at times I have found a couple of numbers that were slightly higer for potential extract for certain grains in BeerSmith. The same goes for the AA% for Hops too.

I always check these numbers before I brew and plug in what I have on hand.

If the recipe was recreated, there can be differences in the ingredient parameters such as potential extract and color. The results may be closer if you import the BeerXML instead of recreating the recipe from scratch.

why don't you just brew the beer and take your measurements, then see which program is closer? 10 gravity points is about a percent ABV difference. in an imperial IPA, you've got bigger things to worry about than that.